Investigators say the shooting happened just before 8:00 p.m. Friday on 5th Street and Faller Avenue.
When officers arrived, they found the minor shot once but police did not specify where.
Authorities believe the victim and two suspects had gotten into an argument at a nearby park, which then continued to Faller Avenue, where the shooting occurred.
The victim, whose age was not provided, was taken to Community Regional Medical Center in Fresno. Their condition is unknown.
Witness told police they saw at least one of the suspects take off to a home nearby.
Police say that the home was investigated with the help of the Fresno County Sheriff's Office.
Saturday morning, police announced the arrest of 18-year-old suspect, Julian Ulloa, with the help of MAGEC.
Ulloa is a familiar face to law enforcement and is believed to have gang ties.
He is at the Fresno County Jail on multiple counts of attempted murder.
Stay with ABC30 for the latest details on this developing story.